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Abdominal plain CT scan of a 71-year-old female patient who was preoperatively diagnosed with CDF combined with GI. (A) Pneumobilia (red arrow); (B) Pneumo-gallbladder and ill-defined borderline between gallbladder and digestive tract (red arrow); (C) Rim-calcified gallstone impacted in the small bowel, combined with dilatation of proximal small bowel (red arrow); (D) Coronal view of impacted rim-calcified gallstone and dilatation of proximal small bowel (red arrow).
